1991685

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 3344544

約数和(自身を除く): 1352859

約数列:

[1, 3, 5, 15, 23, 69, 115, 251, 345, 529, 753, 1255, 1587, 2645, 3765, 5773, 7935, 17319, 28865, 86595, 132779, 398337, 663895, 1991685]

約数ペア:

[(1, 1991685), (3, 663895), (5, 398337), (15, 132779), (23, 86595), (69, 28865), (115, 17319), (251, 7935), (345, 5773), (529, 3765), (753, 2645), (1255, 1587)]